Ball-bearing for conveyer-rollers.



S. L. GOLDMAN.

BALL BEARING Pon GONVLYER RoLLERs.

APPLICATION PILLD 00T. 2, 1909. 1

Patented May 31, 1910.

SIGMUND L. GOLDMAN, OF CHICAGG, ILLINOIS.

BALL-BEARING FOR CONVEYER-ROLLERS.

Specieation of Letters Patent.

Application led October 2, 1909. Serial No. 520,726.

To all 'whom it may concern:

Be it known that I, SIGMUND L. GOLDMAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Ball-Bearings for Conveyer-Rollers, of which the following is a specification.

My present invention is primarily intended as an improvement on the device which forms the subject of Letters Patent of the United States No. 914,714, granted to me on the 9th day of March, 1909; my ob-.

ject being to improve, in matters of detail, the construction shown and described in said patent to the end of decreasing the expense of its manufacture and rendering it stronger and more desirable and facilitating t-he repair of worn or broken parts when the de-v vice is in operative position ina gravity or other conveyer.

In the accompanying drawing, Figure 1 is a broken longitudinal section of a conveyer-roller of my improved construction, represented as supported in operative posi'- tion in the side-'members of a conveyer frame, shown in transverse sect-ion; Fig. 2" is a similar view of the same, but illustrating by dotted representation the manner, permitted by the construction, of freeing the roller from its supports to permit access to the ball-bearing, and Fig. 3 is a section on line 3, Fig. l.

My improved construction of ball-bearing is the same in each end of a tubular roller 4, with a shaft 5 extending centrally through it and through both ball-bearings, beyond which its threaded ends project through openings 6 in the similar angle-bars 7 which form the side-members of a conveyer frame.

The diameter of each ope-ning 6, which should taper somewhat outwardly, as shown, is slightly greater than the diameter of the shaft, the threads 8 on which extend from its outer4 ends inwardly to'a considerable distance beyond the respective ball-bearings, all for the purpose hereinafter explained. Both ball-bearings are the same in construction, each involving a cup 9 formed of an outer annular cupped section -10 formed preferably of spring-steel and provided with a Bange 11 about its outer edge, and an inner annular cupped section 12, formed preferably of the same metal, but case-hardened to deprive it of its springy quality and adapt it to withstand the wear of the balls 13 confined within it, the section 12 being provided with a circumferential flange 14. The ballbearing parts thus far described are the same as in the aforesaid patent and, with the parts 10 and 12 of each assembled, are similarly connected with the roller 4, namely by pressing into each end thereof 'a set ofthe assembled cupped sections until the flange 11 abuts against the respective end of the roller, such pressing into place of the cup serving to hold it in position by reason of the springy quality of the section 10 binding it by its expansion against the inner wall of the roller. It is found desirable in practice, however, to supplement the binding effect of the section 10 by means of rivets 15y inserted at intervals through the wall of that section and that of the roller with their ends countersunk in the latter to be Hush with its outer surface. The cone 1G`for each ball-bearing is a solid body containing a central threaded perforation to adapt it to be screwed upon a threaded end ofthe'shaft 5 and to be adjusted into relation to the balls 13 confined by it; and to facilitate the adjustment through the medium of a suitable tool (wrench) the cone is provided with an angular, and preferably hexagon, head 17 Wth a roller 4 in position on its supports 6, is secured in place by means of nuts 18 applied to the projecting ends of the shaft and by means of which the cones are tightly held against the inner faces of the conveyerframe members. The angular head-17 of the cone extends. beyond the peripheral edge of the inner annular section 12, and thus acts asa dust guard for such section.

A conveyer of the kind in which my 1 mproved roller-bearing is more especially 111-' tended to be used is usually made up of a series of longitudinal connected sections, each section containing a plurality of rollers 4 but slightly separated from each other. Parts of the ball-bearings are liable to 11npairment with use, the balls, particularly,

vPatented May 31, 1910.

being subject to fracture, necessitating renew ones, all that is required is to remove a' nut 18turn the shaft at the end opposite that from which the nut was removed, in the direction to unscrew it and thereby with, draw its opposite end from the respective opening 6, thus into the position illustrated in Fig. 2, when the entire roller may be tilted to the position represented by dotted lines in that figure, wherein the end containing the impaired part is raised beyond the adjacent rail or frame-member 7 into accessible position enabling the cone and other parts to be Wholly withdrawn, if required, or only partial withdrawal of the cone, by unscrewing it, if the repair merely involves replacing one or more broken balls with perfeet ones.

The threaded shafts 5 with the nuts 18 on the ends thereof when used in connection with bearings or supports of the angleiron form shown in the drawing also act as braces and tie such angle irons together, thus obviating the necessity for the use o any other Jform of braces for this purpose.

What claim as new and desire to secure by Letters Patent isn combination, side-supports, a tubular roller, ball-bearings on the roller ends, each vcomprising a cap composed of an outer annular section of spring metal, a separate annular section within said outer section and forming the ball-race, balls in said race, cone-forming stepped sleeves confining the balls therein and provided with angular heads extending beyond the peripheral edge of said inner annular sections and closing the same, a shaft extending centrally through said roller and having threaded end-sections upon which said cones are screwed and adjusted relative to the ballraces, and means on the shaft-ends for securing the shaftin place on the sidelsupports and for adjusting the cones relative thereto, as set forth. t

SIGMUND L. GOLDMAN. In presence of- J. G. ANDERSON, L. G. KIRKLAND. 

